Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] Fix alignment fault handling for ARMv6 and later CPUs
  [ARM] 5340/1: fix stack placement after noexecstack changes
  [ARM] 5339/1: fix __fls() on ARM
  [ARM] Orion: fix bug in pcie configuration cycle function field mask
  [ARM] omap: fix a pile of issues
This commit is contained in:
Linus Torvalds 2008-12-09 08:29:31 -08:00
commit 437f2f91d6
8 changed files with 43 additions and 19 deletions

View file

@ -237,6 +237,7 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset);
#if __LINUX_ARM_ARCH__ < 5
#include <asm-generic/bitops/ffz.h>
#include <asm-generic/bitops/__fls.h>
#include <asm-generic/bitops/__ffs.h>
#include <asm-generic/bitops/fls.h>
#include <asm-generic/bitops/ffs.h>
@ -277,16 +278,19 @@ static inline int constant_fls(int x)
* the clz instruction for much better code efficiency.
*/
#define __fls(x) \
( __builtin_constant_p(x) ? constant_fls(x) : \
({ int __r; asm("clz\t%0, %1" : "=r"(__r) : "r"(x) : "cc"); 32-__r; }) )
/* Implement fls() in C so that 64-bit args are suitably truncated */
static inline int fls(int x)
{
return __fls(x);
int ret;
if (__builtin_constant_p(x))
return constant_fls(x);
asm("clz\t%0, %1" : "=r" (ret) : "r" (x) : "cc");
ret = 32 - ret;
return ret;
}
#define __fls(x) (fls(x) - 1)
#define ffs(x) ({ unsigned long __t = (x); fls(__t & -__t); })
#define __ffs(x) (ffs(x) - 1)
#define ffz(x) __ffs( ~(x) )

View file

@ -23,7 +23,7 @@
#include <asm/types.h>
#ifdef __KERNEL__
#define STACK_TOP ((current->personality == PER_LINUX_32BIT) ? \
#define STACK_TOP ((current->personality & ADDR_LIMIT_32BIT) ? \
TASK_SIZE : TASK_SIZE_26)
#define STACK_TOP_MAX TASK_SIZE
#endif

View file

@ -128,7 +128,7 @@ void __init omap1_map_common_io(void)
* Common low-level hardware init for omap1. This should only get called from
* board specific init.
*/
void __init omap1_init_common_hw()
void __init omap1_init_common_hw(void)
{
/* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
* on a Posted Write in the TIPB Bridge".

View file

@ -70,6 +70,10 @@ static unsigned long ai_dword;
static unsigned long ai_multi;
static int ai_usermode;
#define UM_WARN (1 << 0)
#define UM_FIXUP (1 << 1)
#define UM_SIGNAL (1 << 2)
#ifdef CONFIG_PROC_FS
static const char *usermode_action[] = {
"ignored",
@ -754,7 +758,7 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
user:
ai_user += 1;
if (ai_usermode & 1)
if (ai_usermode & UM_WARN)
printk("Alignment trap: %s (%d) PC=0x%08lx Instr=0x%0*lx "
"Address=0x%08lx FSR 0x%03x\n", current->comm,
task_pid_nr(current), instrptr,
@ -762,10 +766,10 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
thumb_mode(regs) ? tinstr : instr,
addr, fsr);
if (ai_usermode & 2)
if (ai_usermode & UM_FIXUP)
goto fixup;
if (ai_usermode & 4)
if (ai_usermode & UM_SIGNAL)
force_sig(SIGBUS, current);
else
set_cr(cr_no_alignment);
@ -796,6 +800,22 @@ static int __init alignment_init(void)
res->write_proc = proc_alignment_write;
#endif
/*
* ARMv6 and later CPUs can perform unaligned accesses for
* most single load and store instructions up to word size.
* LDM, STM, LDRD and STRD still need to be handled.
*
* Ignoring the alignment fault is not an option on these
* CPUs since we spin re-faulting the instruction without
* making any progress.
*/
if (cpu_architecture() >= CPU_ARCH_ARMv6 && (cr_alignment & CR_U)) {
cr_alignment &= ~CR_A;
cr_no_alignment &= ~CR_A;
set_cr(cr_alignment);
ai_usermode = UM_FIXUP;
}
hook_fault_code(1, do_alignment, SIGILL, "alignment exception");
hook_fault_code(3, do_alignment, SIGILL, "alignment exception");

View file

@ -353,8 +353,8 @@ struct omapfb_device {
u32 pseudo_palette[17];
struct lcd_panel *panel; /* LCD panel */
struct lcd_ctrl *ctrl; /* LCD controller */
struct lcd_ctrl *int_ctrl; /* internal LCD ctrl */
const struct lcd_ctrl *ctrl; /* LCD controller */
const struct lcd_ctrl *int_ctrl; /* internal LCD ctrl */
struct lcd_ctrl_extif *ext_if; /* LCD ctrl external
interface */
struct device *dev;

View file

@ -255,7 +255,7 @@ void omap_sram_reprogram_clock(u32 dpllctl, u32 ckctl)
if (!_omap_sram_reprogram_clock)
omap_sram_error();
return _omap_sram_reprogram_clock(dpllctl, ckctl);
_omap_sram_reprogram_clock(dpllctl, ckctl);
}
int __init omap1_sram_init(void)
@ -282,8 +282,8 @@ void omap2_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
if (!_omap2_sram_ddr_init)
omap_sram_error();
return _omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
base_cs, force_unlock);
_omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
base_cs, force_unlock);
}
static void (*_omap2_sram_reprogram_sdrc)(u32 perf_level, u32 dll_val,
@ -294,7 +294,7 @@ void omap2_sram_reprogram_sdrc(u32 perf_level, u32 dll_val, u32 mem_type)
if (!_omap2_sram_reprogram_sdrc)
omap_sram_error();
return _omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
_omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
}
static u32 (*_omap2_set_prcm)(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);

View file

@ -35,7 +35,7 @@
#define PCIE_CONF_REG(r) ((((r) & 0xf00) << 16) | ((r) & 0xfc))
#define PCIE_CONF_BUS(b) (((b) & 0xff) << 16)
#define PCIE_CONF_DEV(d) (((d) & 0x1f) << 11)
#define PCIE_CONF_FUNC(f) (((f) & 0x3) << 8)
#define PCIE_CONF_FUNC(f) (((f) & 0x7) << 8)
#define PCIE_CONF_DATA_OFF 0x18fc
#define PCIE_MASK_OFF 0x1910
#define PCIE_CTRL_OFF 0x1a00

View file

@ -392,7 +392,7 @@ static void set_fb_fix(struct fb_info *fbi)
int bpp;
rg = &plane->fbdev->mem_desc.region[plane->idx];
fbi->screen_base = (char __iomem *)rg->vaddr;
fbi->screen_base = rg->vaddr;
fix->smem_start = rg->paddr;
fix->smem_len = rg->size;